I'm considering a new project. One car of interest to me is a 1977 Celica GT hatch. I'm curious what a ball park selling price would be for one in reliable condition but cosmetically a project car (in North America)

...Whatever you're willing to pay and they're willing to take? There will be a wide range of pricing depending on a lot of factors. $500? $1000? Guesses coming from a devoted 73 coupe owner. Consider shipping/transportation to you as well. Big money there!

I paid $1900 for mine. bone stock. This is one of the higher figures I've heard about, but I looked for about 4 years until I found one that wasn't a pile of shit and all rusted out. Mine has very minimal rust, runs great, and very little body damage. To me, I was mentally prepared to spend up to $2500 long before I came across this particular vehicle. I wanted one and the price wasn't all that important.

All depends though! These are definitely the type of cars that you can find sitting in a field or someone's yard and pay almost nothing for it. it all depends on your resourcefulness and what you are willing to spend!